Adjustable duplex quick-release fastener



NovQfi 1924. 1,514,462

' N. RETTER ADJUSTABLE DUPLEX QUICK RELEASE FASTENER Filed March 11, 1924 FEEL WITNESSES A INVENTOR A TTORNE YS Patented Nov. 4, 1924.

NATHAN BITTER, OF BROOKLYN, NEW YORK.

ADJUSTABLE DUPLEX QUICK-RELEASE FASTENER.

Application filed March 11', 1924.

To all whom it may concern:

Be it known that I, NATHAN ltrr'rnn, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Adjustable Duplex Quick-Release Fastener, of which the following is a full, clear, and exact description.

This invention relates to improvements in adjustable duplex quick release fasteners, an object of the invention being to provide a fastener for straps and the like which not only permits a quick and practically instantaneous release but also permits a loosening or slow release of the strap fastener and strap as may be desired.

In the binding of letters and other articles it is sometimes desirable to permit a slow release, or, in other words, a slack in the strap before the fastener is completely released, and it is the purpose of my invention to provide a fastener which not only permits a quick and instantaneous release when de sired but also allows a loosening of the strap,

fastener and package to the extent that may be desired. 7

A further object is to provide a fastener which may be adjusted with relation to the strap so as to allow its quick attachment or release in connection with any size of package or bundle.

A further object is to provide a device of the character stated which can be manufactured and sold at an extremely low price and which will most efiiciently perform the functions for which it is intended.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts which will be more fully hereinafter described and pointed out in the claims.

In the accompanying 'drawings- Figure 1 is a perspective view illustrating my improved fastener in its normal holding position, showing the same in connection with a strap around a package;

Figure 2 is a view in longitudinal section through the package, strap and fastener shown in Figure 1;

Figure 3 is a fragmentary view similar to Figure 2, showing the manner of manipulating the fastener for slow release, or, in other Serial No. 698,482.

words, to permit a slack in the strap and release the package of the binding action thereof Figure 4c is a view similar toFigure 3 il- My improved fastener comprises two es sential parts, namely, a loop 1 and a slide 2. The loop 1 may be of general elliptical shape as shown in Figures 1 to 5, inclusive, or it may be of somewhat angular shape as shown in Figure 6, but in any event the loop is preferably elongated transversely and is of width appreciably greater than the width of the slide so as to permit the slide to pass freely through the loop. The invention is, of

(curse, not limited to the precise shape of the slide or the loop, but for convenience in description it will be assumed that the loop 1 has substantially parallel inner and outer bars 3 and Kl, connected at their ends either by curved, integral portions as shown in Figure 5, or by angular portions as shown in Figure 6. V i

The slide2 is preferably of general rectangular form, comprising three substantially parallel bars 6, 7 and 8, spaced at substantially equal distances apart and integrally connected at their ends as shown. These bars 6, 7 and 8 are preferably rounded, curved, or otherwise rendered smooth in cross section, although for purposes of operation it is only sufficient that the intermediate bar 7 is sufliciently smooth exteriorly to permit a strap 9 to slide freely over the same. This part 9 I refer to as a strap as this is its normal function, and it may be composed of canvas, leather or any other suitable flexible ma terial. One end of the strap 9 passes around the inner bar 3 of loop 1 and securely fixed, preferably by means of a rivet 10 or other suitable securing device. The strap 9 is then passed around the inter-- mediate bar 7 and slide 2 and the fastener is ready for use.

In coupling the fastener it is simply necessary to position the slide 2 through the loop 1 until the slide entirely overlaps or overlies the loop, when a pull on the end of the strap will draw the strap taut around thepackage, indicated by the ref erence numeral 11, and will securely hold the same by reason of the fact that the strap is securely clamped between the intermediate bar 7 of the slide and the outer bar of the loop, as shown clearly in Figures 1 and 2. i

It is important that the slide 2 be of a length sufiicient when in holding position to project its inner end or bar 6 above or over the inner bar 3 of the loop l, or, more particularly, the end of the strap 9 around the same, not only to afford a secure binding action but also for purposes of release, as will now be explained. lVhen it is desired to merely slacken the strap around the package, the operator places his thumb or finger against the inner bar 8 of slide 2 and pushes or forces the slide longitudinally, as indicated clearly in Figures 3 and 4, so that the strap can be slackened without completely releasing the fastener. If quick release is desired, the operator places his thumb or finger under I the bar 8 and exerts a lifting action thereon. This causes the forward or outer bar 6 of the slide to move downwardly through the loop 1 and when the slide is free it will pass through the loop and a quick release is had.

In Figure 7 I illustrate another modified form of loop in which a strap receiving bar 15 is made integral with the loop 1 and offset therefrom. This prevents the strap from taking the wear caused by the movement of the slide thereon as the slide will rest directly on the metal of the loop and not on the strap.

Various slight changes and alterations might be made in the general form of the parts described without departing from my invention, and, hence, I do not limit myself to the precise details set forth but consider myself at liberty to make such sli ht changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim:

1. A fastener of the character described, comprising a loop, strap connected to one bar of the loop, and a slide appreciably allel. bars to Jass freelv throu h the loo) l ca the intermediate oar adapted to receive the strap around the same with the end of the strap positioned under the outer end of the loop, and said slide of a length to overlie the material of the strap on the in ner end of the loop when the parts are in holding position whereby the slide may be slid on the loop to permit slack in the strap or be forced through the loop to permit quick release of the fastener.

3. A fastener of the character described, comprising a loop, a slide appreciably narrower than the internal width of the loop and comprising three connected parallel bars to pass freely through the loop, a strap secured around the inner end of the loop, then passed around the intermediate bar of the slide and thence under the outer end of the loop, said slide of a length. when so positioned as to project its inner bar over the strap around the loop whereby a. slow release be had by sliding the slide on the loop, and a quick release had by a fulcruming action of the slide on the loop to compel the slide to pass through the loop.

NATHAN BITTER. 

